Upcoming Ivy Bridge-E Build

I'm anticipating the launch of the Ivy Bridge Extreme chips later in the year. Probably going with the entry level 4820K unless the 4930K is <$500, which I doubt. I'm probably just going to be changing the CPU, motherboard and RAM.My questions are:

Will the IB-E chips be using the same X79 platform that the SB-E chips is using or will there be an X89 chipset launching with it?

Should I sell my GTX680 and upgrade to a GTX780 or add a second GTX680 for an SLI configuration? I personally prefer a single GPU solution.

I would say wait until stuff is available and then consider it all again.

Man these spammers are geniuses...put (NO SPAM) in the thread title to hide the spam. It's brilliant. Hopefully this doesn't catch on...what if rapists wear signs that say (NOT A RAPIST)? They will be raping everybody! D:

There's so little information about any of the mentioned items, so it's near impossible to say what to do. Also, there's, as far as I know, no official release date for ivy bridge-E, so you might even be looking into 2014 before it's released. What's wrong with you current rig?

I know, I know. I'm getting ahead of myself. This rig is awesome, my favorite machine to date (TBH), but it's creeping up to its first birthday. The upgrade itch is starting to hit me. I have a feeling the Ivy to Haswell performance gain will be insignificant so I'm planning on going with an IB-E. However, if the IB-E's are really looking at a 2014 release then I have no choice but to get a Haswell, but I'm hoping that isn't the case.